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Nationwide french study aims to settle debate on best way to remove large colon polyps

NCT ID NCT04592003

Knowledge-focused Sponsor: University Hospital, Limoges Source: ClinicalTrials.gov ↗

What the study statuses mean

This study's is highlighted.

Recruitment status, easiest to join first

Recruiting now This study
This trial is taking on new participants right now.
Not yet recruiting
Registered, but not yet taking participants.
By invitation only
Not open to general applications. Only people the study team invites can take part.
Paused
Paused for now. It may or may not start again.
Ongoing
Running, but no longer taking on new participants.
Completed
The trial has finished. Results may not be published yet.
Stopped early
Stopped early, before it reached the end. That can be for many reasons, including safety.
Cancelled
Cancelled before anyone took part.

Expanded access (not trials)

Expanded access
Not a trial. This treatment can be requested outside a study, case by case, for people who qualify.
Expanded access (paused)
Not a trial. The treatment can normally be requested outside a study, but is unavailable right now.
Expanded access (ended)
Not a trial. The treatment could once be requested outside a study, but no longer can.
Approved
The treatment has been approved, so it is available normally rather than through this programme.

When the status isn't known

Details not published
The full record has not been published yet, so there is little to show here.
Status unknown
This status has not been confirmed recently, so it may be out of date.

First seen Jun 26, 2026 · Last updated Jun 26, 2026

Summary

This study is collecting data from 1,200 people across France who are having a procedure called endoscopic submucosal dissection (ESD) to remove large polyps or early cancers from the colon. ESD allows doctors to remove the entire lesion in one piece, which helps with accurate analysis and lowers the chance of the polyp coming back. However, it is more complex and has a higher risk of complications than standard methods. The goal is to gather real-world evidence on how safe and effective ESD is in expert centers.

What this could mean

Our plain-language read of the trial. This is informational only, not medical advice or a prediction.

Active substance
Endoscopic submucosal dissection (a procedure to remove abnormal tissue from the colon using a scope)
What this could lead to
If successful, this study could help clarify when ESD is the best option for removing large colorectal polyps, potentially reducing recurrence and the need for repeat procedures.
What could go wrong
This is an observational study, not a controlled trial, so it cannot prove that ESD is better than other methods. The procedure carries risks like perforation (about 4%) and is more complex and costly.

This is an AI summary of the original study and may miss details. Read our disclaimer.

Study facts

What this study's own registry entry says, in plain language.

Participants

About 1,200 people

The number the study aims to enrol. It can still change while the study runs.

Started

Jan 2020

Expected to finish

Jan 2026

An estimate. End dates often move.

Lead sponsor

Other sponsor

The registry's catch-all category, for sponsors it does not file as a company, a government agency, or a research network.

Who can take part

This study's own entry requirements. Only the study team can say for certain whether you qualify.

Who is studied

All patients addressed for a colorectal ESD

Ages

18 years and older

Sex

Anyone

Healthy volunteers

Not accepted

This study is not open to healthy volunteers. The entry requirements below say who it is open to.

Show the full entry requirements

Copied word for word from the study's registry entry, so the wording is the study team's rather than ours.

Inclusion Criteria: All patients addressed for a colorectal ESD Exclusion Criteria: Opposition notified in the context of a non-opposition form after reading the information notice

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Conditions

The condition(s) this trial relates to.

colonic neoplasm colorectal cancer polyp of large intestine

As listed by the trial registrant

The condition terms exactly as the trial's registrant entered them.

Cancer colorectal Endoscopic submucosal resection Polyps colorectal

How to take part

Only the study team decides who joins. These are the ways to reach them.

  1. The places running it

    25 sites. The list below names each one and where it is.

  2. The official record

    ClinicalTrials.gov lists the study team's own contact details, including names and phone numbers. We don't republish those.

    Open the record ↗

  3. A doctor treating you

    A doctor who knows your case can contact a study site on your behalf, and can tell you whether this study is worth pursuing at all.

Contacts and locations

Locations

  • CHRU de Brest

    RECRUITING

    Brest, 29200, France

  • CHU d'Amiens

    RECRUITING

    Amiens, 80054, France

  • CHU de Besançon

    RECRUITING

    Besançon, 25000, France

  • CHU de Bordeaux

    RECRUITING

    Bordeaux, 33400, France

  • CHU de Dijon

    RECRUITING

    Dijon, 21000, France

  • CHU de Limoges

    RECRUITING

    Limoges, 87045, France

  • CHU de Montpellier

    RECRUITING

    Montpellier, 34090, France

  • CHU de Nancy

    RECRUITING

    Nancy, 54035, France

  • CHU de Nantes

    RECRUITING

    Nantes, 44093, France

  • CHU de Nice

    RECRUITING

    Nice, 06200, France

  • CHU de Nîmes

    RECRUITING

    Nîmes, 30029, France

  • CHU de Rennes

    RECRUITING

    Rennes, 35000, France

  • CHU de Rouen

    RECRUITING

    Rouen, 76031, France

  • CHU de Strasbourg

    RECRUITING

    Strasbourg, 67000, France

  • CHU de Toulouse

    RECRUITING

    Toulouse, 31400, France

  • Clinique Jules Vernes

    RECRUITING

    Nantes, 44000, France

  • Clinique Santé Atlantique

    RECRUITING

    Saint-Herblain, 44800, France

  • Clinique de l'Anjou

    RECRUITING

    Angers, 49044, France

  • Hopital Edouard Herriot

    RECRUITING

    Lyon, 69003, France

  • Hôpital Cochin - APHP

    RECRUITING

    Paris, 75014, France

  • Hôpital Européen

    RECRUITING

    Marseille, 13003, France

  • Hôpital Européen Georges Pompidou-APHP

    RECRUITING

    Paris, 75015, France

  • Hôpital Jean Mermoz

    RECRUITING

    Lyon, 69008, France

  • Hôpital St Antoine

    RECRUITING

    Paris, 75012, France

  • Hôpital St Joseph

    RECRUITING

    Paris, 75014, France

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